Cervical ribs and other abnormalities of the vertebral pattern in children with esophageal atresia and anorectal malformations

Exploration of the thoracoscopic treatment of esophageal atresia under high-frequency ventilation

Objective

Explore the feasibility and safety of thoracoscopy in the treatment of esophageal atresia under high-frequency oscillatory ventilation (HFOV) mode.

Methods

This was a single-center retrospective analysis. A total of 24 children were divided into the HFOV and the No-HFOV group. The demographic information, surgical results and relevant experience were analyzed.

Results

All patients in the HFOV group underwent thoracoscopic esophageal atreplasty with a mean operation duration of 165.8 ± 33.9 min. Two patients had postoperative anastomotic leakage, which was cured after conservative treatment. One child had a recurrent tracheoesophageal fistula, which was closed after endoscopic cauterization. The mean postoperative mechanical ventilation time was 8.83 ± 8.02 days. There was no return of anastomotic leakage or r-TEF after oral feeding. Furthermore, there was no significant difference between the NO-HFOV and the HFOV groups except for the operation time where the HFOV group was shorter than that of the NO-HFOV group.

Conclusion

Thoracoscopic esophageal atresia anastomosis under HFOV ventilation is feasible for patients with severe pulmonary infection, heart malformation, such as patent ductus arteriosus, ventricular septal defect, and poor anesthesia tolerance, but the long-term prognosis still needs further study in a large sample size.

Exploring copy number variants in deceased fetuses and neonates with abnormal vertebral patterns and cervical ribs

Background

Cervical patterning abnormalities are rare in the general population, but one variant, cervical ribs, is particularly common in deceased fetuses and neonates. The discrepancy between the incidence in the general population and early mortality is likely due to indirect selection against cervical ribs. The cause for the co‐occurrence of cervical ribs and adverse outcome remains unidentified. Copy number variations resulting in gain or loss of specific genes involved in development and patterning could play a causative role.

Methods

Radiographs of 374 deceased fetuses and infants, including terminations of pregnancies, stillbirths and neonatal deaths, were assessed. Copy number profiles of 265 patients were determined using single nucleotide polymorphism array.

Results

274/374 patients (73.3%) had an abnormal vertebral pattern, which was associated with congenital abnormalities. Cervical ribs were present in 188/374 (50.3%) and were more common in stillbirths (69/128 [53.9%]) and terminations of pregnancies (101/188 [53.7%]), compared to live births (18/58, 31.0%). Large (likely) deleterious copy number variants and aneuploidies were prevalent in these patients. None of the rare copy number variants were recurrent or overlapped with candidate genes for vertebral patterning.

Conclusions

The large variety of copy number variants in deceased fetuses and neonates with similar abnormalities of the vertebral pattern probably reflects the etiological heterogeneity of vertebral patterning abnormalities. This genetic heterogeneity corresponds with the hypothesis that cervical ribs can be regarded as a sign of disruption of critical, highly interactive stages of embryogenesis. The vertebral pattern can probably provide valuable information regarding fetal and neonatal outcome.